Breakthrough Battery Technology Showcased at Angel Capital Expo

SAN FRANCISCO, CA -- (MARKET WIRE) -- April 23, 2007 -- Porous Power Technologies, an emerging
manufacturer of performance- and life-enhancing components for lithium
batteries, will present its innovative technology on April 25 at an
investment exposition organized by the Keiretsu Forum, the nation's largest
investment community of private equity (angel) investors, VCs and corporate
investors.

Porous Power Technologies' ultraporous polymer membrane is used as a
separator between battery and ultracapacitor electrodes, keeping them from
shorting while enabling significantly faster charging, better high-rate
capacity, and longer cycle life than competing products. The new
patent-pending membrane could improve performance for all of the $6B worth
of lithium batteries sold each year, and manufacturers of batteries for
Hybrid Electric Vehicles are excited about its promise to extend pack life
and reduce cost. Toyota has announced that it expects to produce 1,000,000
HEVs annually early in the next decade, all of which are expected to have
lithium-ion batteries.

Tim Feaver, President and CEO of Porous Power, said, "We're excited to be
working with the Keiretsu Forum's new Cleantech Investment Committee. So
many alternative energy solutions are critically dependant on good
batteries, and the opportunity to reach so many accredited investors at
once will be a great kickoff for our next funding round to help speed this
technology to market."

Keiretsu Forum provides a structured approach to private equity
investments, allowing like-minded business leaders to work together in
assessing investment opportunities and then make individual investment
decisions.

About Keiretsu Forum

With 12 chapters and over 500 accredited investor members throughout the
world, Keiretsu Forum (www.keiretsuforum.com) is the largest North American
angel investment network. Keiretsu Forum members have invested over $130 MM
in 145 Companies and provide early-stage capital in the range of $250K-$2MM
to high-quality, diverse investment opportunities and collaborate in the
due diligence, but make individual investment decisions.

Porous Power Technologies (PPT), in Lafayette, Colorado, produces
innovative ultraporous polymer components to improve the performance of the
lithium-ion batteries used in power tools, hybrid electric vehicles, and
nearly every portable electronic device today. PPT products, named the
"2005 Advanced Energy Storage Technology Innovation of the Year" by Frost
and Sullivan, enables charging up to 50% faster, high-rate capacities up to
4 times greater, and a potential doubling of cycle life. PPT is
negotiating with manufacturing partners to rapidly scale up production to
meet industry needs.